Fireproof door.



No. 888,863. 'PATENTED MAY 26, 1908.

- P. J. ANQUIST.

FIREPROOF DOOR.

APPLICATION FILED JUNE 3, 1907.

1 SHEETS-SHEET 1.

izf Z1 5- No. 888,863; I PATENTED MAY 26, 1908.

P. J. 'ANQUIST.

FIREPROOF 110011. APPLIOATION FILED JUNE 3, 1907.

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PATENTED MAY 26, 1908.

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APPLICATION FILED JUNE 3, 1907.

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plan view of the actuating mechanism.

To all whom it may concern:

PETER JOHN ANQUIST,

PATENT OFFICE.

or CHICAGO, ILLINoIs.

FmErnooF noon.

Specification of. Letters Patent' Patented May 26, 1908.

Application filed June 3, 195% Serial n 376,926.

Be it known that 1, PETER J OHN Anonrsr,

a citizen of the United States, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Fireproof Doors; andI do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters 'of reference marked thereon, which form a part of this specification.

This invention relates to improvements in fireproof doors.

It is an object of this invention to provide a door of the class specified om rising telesco ing sections adapted to fold in opening wit a suitable space in the wall.

It is also an object of this invention to provide'a door in which each section is positively actuated in opening and having a ra-.

tio ofmovement such that all the sections are fully opened or closed simultaneously.

It is furtheran object of this invention to provide a door in which one of the'sections may be opened independent of the opening of the others. I

It isfinally an object of this invention to provide a very strong door,- simple in construction and operation and cheap to install.

The invention-relates to the matters here-- inafter described and more fully pointed out and defined in the appended claims.

' On the drawin s: Figure 1 is a front elevation of avertical y o ening door with part of the wall in section il us trating the operating mechanism. Fig. 2 is a vertical section of the door shown in Fig. 1/ Fig. 3 is ajtop 1g. 4 is an enlarged detail of one of the guides and means for en aging the chains to the doors. Fig. 5 is. a ront elevation of horizontally telescoping doors with part of the wall in section. Fig. 6 is a section on line 6-6 of Fig. 5. Fig. 7 is an enlarged fragmentary front elevation of the actuatingmechanism and attaching means. Fig. 8 is a section on line 88 of Fig. 5.. Fig. 9 is an enlarged top plan viewof the mechanism for releasing the inde endently movable section. Fig. l Ois' a si e elevation thereof. .11 is a frag- -mentary detail of the first sectionand means for locking the same in closed position."

' i As shown in-the drawings: A indicates the wall of the building which is provided with suitable spaces at the sides and top of the door opening to receive the operating mechanism and the door therein. a The door tieally slidable sections B, B, B and B conand each section having inwardly directed flanges at the top, bottom andends thereof. The top and bottom flanges are adapted to interlock with the flanges of the section below and above the same and may be integral Fig. 3.

Guide blocks b are rigidly secured to the flanges at the ends of each section at the top and bottom thereof and fit within the respective guide channels bbb b provlded by the channel bar B which as shown has inwardly directed parallel partitions B forming said guide channels.

A shaft D is j ournaled in the wall at eac engaged to the arm cl secured to the section B in any preferred manner which extends throu h a suitable slot'in'the channel bar B Said 0 min is trained over the gear-d, around the pulley (i then upwardly over the gear (i .or constructed of angle irons B as shown 111' end of the sections and rigidly secured there.

shown in Figs. 1 to 4 inclusive comprises verstructed of sheet metal of any suitable kind and is secured at its lower end to the arm (Z engaged to the section B The chain (i is rigidly secured at one end to the arm (1 on the sectionjB which is trained over the gear (1 down around the pulley at, then ,over the gear (1 having the lower end secured to the arm d engaged to the section B and a suitable weight'i's suspended from the pulley. d.

' crossed cable 0 thus obtaining a positive actuation for each shaft. The construction shown in Flgs. 5 to10 inclusive comprises sections E, E, E E E,

For the purposeof actuating the doors a suitable cable C for manual engagement is E E, and E four of which telescope and are securedin suitable spaces in the wall on opposite sides of the door opening. Each section is provided with a bracket E journaled at the corners of which are track wheels 6 j which are supported on the tracks eee and 6 respectively. Suitable guides are provided for the bottom of each section.

The operating connections are practically the same as described with reference to Figs. 1 to 5 with the exception that the end of the chain d is provided with a notched plate f A tooth f 2 on the bracket secured to the sec- -of the cable C in Fig. 1 the shaft D is actuated bb b from approximately the bottom of which operates the sprocket wheels (i to d inclusive thus imparting simultaneously motion to all of said sections B to B inclusive each lower one of which travels at a slightly greater velocity than the adjacent upper section so that when the uppermost section is fully raised and lowered the other sections are also in their respective positions. The Weight D keeps the required tension on said chains permitting free movement of the same. By actuation of the cord or chain f the tooth integral with the opposite end of the lever F engages the appropriate notch in the plate f elevating the plate to-disengage the tooth f 2 on the bracket E permitting free movement of the section E so that ac-.

cess may be hadthrough the-door without opening all the sections. To return the section E to normal the lever F is actuated elevating the plate above the tooth f and.

the section forced closed when releasing the cord or chain, the spring returns the lever to ad ust the plate to engage the tooth on the bracket and the tooth of the lever is de pressed below the plate permitting free movement of the sections.

When the plate f is engaged by the actuating lever F thereby permitting independent openingof the section, said lever holds the other sections-closed until the independently ci plemng section has been returned to normal.

thus maintaining uniform tension on the chains preventing the sections sliding open. 'In Figs. 1 and 2 the guide channels the uide channel I) are directed at an outwar an le so that the sections are in comparative (y the same plane when closed.

Instea of chains for actuatingthe doors is is true inasmuch as the plate is heldleys journaled adjacent thereto,

cables and suitable pulleys may be employed and as shown should either of the actuating chains break said doors may be raised by a handle G and the flanges in this case interlocking in closing'the door. Also if referred one of the doors may be provide with a glass panel therein as shown at B, Figs. 1 and 4, and many other changes may be made without departing from the principle of this invention and I therefore do not purpose limiting this application for patent otherwise than necessitated by the prior art.

I claim as my invention:

1. A fireproof door embracing sections adapted to be concealed within the wall, shafts journaled at each side of the door, differential wheels on each shaft, slotted guides for said sections, arms secured to each section and extending through the slots in the guides, chains or cables secured at its ends to the arms of the end sections and trained around a corresponding number of wheels, the other secured at its ends to adjacent sections and trained around the corresponding wheels, connected pulleys one secured-in the bight of each cable or chain, a weight secured thereto, a cable operativelyconnecting the shafts, a shaft journaled below oneof the aforesaid shafts at one side of the door, pulleys on said shafts and a cable trained around the pulleys adapted for manual actuation in opening and closing the door.

2. A door embracing sections, brackets sepermitting the same to open indemoving said sections at diiferent rates of speed in opening, means for opening one section independently of-the other sections and means for returning said opening means to normal position. i

' 4. A door embracing telescoping sections, mechanism for actuating all of the sections simultaneously to open or close the door and mechanism for releasing "one of said sections to open independently of the others and firmly securing the remaining sections from' opening.

5. A door embracing sliding sections, ul-

of one of the cables to its res ective section,-

mechanism for actuating sai means to perc'a les mit the section to open independently of the other sections and means adapted to automatically return the aforesaid means to engage said section as the same is closed.

6. In a door of the class described sliding telescoping sections, mechanism for actuating all the sections to open or close the door, mechanism for releasing one section to open independently of the others and holding the other sections closed until said independently opening section is closed and means returning the releasing mechanism to normal position.

7. In a door construction a plurality of tracks, door sections slidable thereon, cables for actuating the sections, weights for keeping the cables taut, manually operated mechanism for releasing one section to open and holding the other sections closed and means returning said mechanism to normal position.

8. In a .device of the class described the combination with tracks of telescoping sections, a bracket on each, wheels thereon adapted to support the section on the appropriate track, means for operating said sec tion at a diiferential speed and means unlocking one section to open independently of the others.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing Witnesses.

PETER JOHN ANQUIST.

Witnesses:

C. W. HILLS, .K. E. HANNAH. 

